so the fbi does what it says it's able to do under the law. they looked at whether he was in any of the federal databases of suspected terrorists or whether there was any indication that he was communicating either by phone or my looking at internet sites with any suspected terrorist organizations or individuals. they looked at his travel, travel history, all of that came up negative. so then they decided to interview him. they questioned him, questioned members of his family and after doing all that they said we've got nothing here. they said they went back to the russians -- or they went back to the foreign government and said we can't find anything, give us more. tell us more of what you think, why you think this and they say they never got a response. >> the obama administration has okayed the suspension of the suspect's miranda rights. is that a temporary suspension? >> reporter: yes, by law it is. it's called the public safety exception to the miranda rule. normally you have to tell someone they have a right to remain silent and if you d